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Numerical Investigation of Wave-Structure Interaction
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Numerical Investigation of Wave-Structure Interaction

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Ocean Engineering".

Deadline for manuscript submissions: closed (10 January 2021) | Viewed by 12675

Special Issue Editor

Dr. Giovanni Cannata

E-Mail Website
Guest Editor
Department of Civil, Constructional and Environmental Engineering, Sapienza University of Rome, 00184 Rome, RM, Italy
Interests: computational hydraulics; free-surface flows; three-dimensional numerical models; curvilinear coordinates; coastal engineering; coastal sediment transport
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Harbours and costal defence structures are directly subjected to wave action and, in turn, significantly affect wave propagation in coastal areas. Recently, numerical models have become essential tools for predicting the effect produced by emerged or submerged coastal structures on wave motion, wave-induced nearshore currents, or coastal sediment transport.

This Special Issue encourages research papers on the numerical modelling of all aspects of the wave-structure interaction, including the simulation of the modifications produced by costal structures on wave motion, nearshore currents velocity fields, suspended sediment concentration, or the morphological evolution of the seabed in coastal areas.

This Special Issue is open to contributions regarding both innovative numerical models and engineering case studies. All numerical investigations carried out by numerical models based on depth-averaged motion equations as well as two-dimensional or three-dimensional ones are welcome.

Prof. Giovanni Cannata
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Wave-structure interactions
  • Numerical modelling
  • Coastal engineering
  • Nearshore currents
  • Coastal sediment transport
  • Seabed evolution

Published Papers (6 papers)

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Editorial

Jump to: Research

4 pages, 173 KiB  
Editorial
Numerical Investigation of Wave-Structure Interaction
by Giovanni Cannata
J. Mar. Sci. Eng. 2023, 11(1), 37; https://doi.org/10.3390/jmse11010037 - 28 Dec 2022
Cited by 1 | Viewed by 961
Abstract
The simulation of the propagation and evolution of sea waves in coastal regions and their interaction with coastal structures is a very useful engineering tool in several problems of coastal and environmental engineering [...] Full article
(This article belongs to the Special Issue Numerical Investigation of Wave-Structure Interaction)

Research

Jump to: Editorial

14 pages, 4277 KiB  
Article
Improving Accuracy in Studying the Interactions of Seismic Waves with Bottom Sediments
by Georgy Mitrofanov, Nikita Goreyavchev and Roman Kushnarev
J. Mar. Sci. Eng. 2021, 9(2), 229; https://doi.org/10.3390/jmse9020229 - 21 Feb 2021
Cited by 3 | Viewed by 1509
Abstract
The emerging tasks of determining the features of bottom sediments, including the evolution of the seabed, require a significant improvement in the quality of data and methods for their processing. Marine seismic data has traditionally been perceived to be of high quality compared [...] Read more.
The emerging tasks of determining the features of bottom sediments, including the evolution of the seabed, require a significant improvement in the quality of data and methods for their processing. Marine seismic data has traditionally been perceived to be of high quality compared to land data. However, high quality is always a relative characteristic and is determined by the problem being solved. In a detailed study of complex processes, the interaction of waves with bottom sediments, as well as the processes of seabed evolution over short time intervals (not millions of years), we need very high accuracy of observations. If we also need significant volumes of research covering large areas, then a significant revision of questions about the quality of observations and methods of processing is required to improve the quality of data. The article provides an example of data obtained during high-precision marine surveys and containing a wide frequency range from hundreds of hertz to kilohertz. It is shown that these data, visually having a very high quality, have variations in wavelets at all analyzed frequencies. The corresponding variations reach tens of percent. The use of the method of factor decomposition in the spectral domain made it possible to significantly improve the quality of the data, reducing the variability of wavelets by several times. Full article
(This article belongs to the Special Issue Numerical Investigation of Wave-Structure Interaction)
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16 pages, 3636 KiB  
Article
VD-PQ; A Velocity-Dependent Viscous Damping Model for Wave-Structure Interaction Analysis
by Constantine Michailides
J. Mar. Sci. Eng. 2021, 9(2), 175; https://doi.org/10.3390/jmse9020175 - 09 Feb 2021
Cited by 2 | Viewed by 2012
Abstract
For the analysis and design of coastal and offshore structures, viscous loads represent one of the most influential parameters that dominate their response. Very commonly, the potential flow theory is used for identifying the excitation wave loads, while the viscous damping loads are [...] Read more.
For the analysis and design of coastal and offshore structures, viscous loads represent one of the most influential parameters that dominate their response. Very commonly, the potential flow theory is used for identifying the excitation wave loads, while the viscous damping loads are taken into consideration as distributed drag type loads and/or as linear and quadratic damping loads approximated with the use of motion decay curves of the structure in specific degrees of freedom. In the present paper, is developed and proposed a numerical analysis method for addressing wave-structure interaction effects through a velocity-dependent viscous damping model. Results derived by a computational fluid dynamics model are coupled with a model that uses the boundary element method for the estimation of the viscous damping loads iteratively in every time-step of the analysis. The computational fluid dynamics model solves the Navier–Stokes equations considering incompressible flow, while the second model solves the modified Cummins Equation of motion of the structure in the time domain. Details about the development of the coupling method and the velocity-dependent viscous damping (VD-PQ) are presented. The coupling between the different models is realized through a dynamic-link library. The proposed coupling method is applied for the case of a wave energy converter. Results derived with the use of the developed numerical analysis method are compared against experimental data and relevant numerical analysis predictions. The importance of considering the instantaneous velocity of the structure in estimating the viscous damping loads is demonstrated. The proposed numerical analysis method for estimating the viscous damping loads provides good accuracy compared to experimental data and, at the same time, low computational cost. Full article
(This article belongs to the Special Issue Numerical Investigation of Wave-Structure Interaction)
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23 pages, 5292 KiB  
Article
Numerical Study over the Effects of a Designed Submerged Breakwater on the Coastal Sediment Transport in the Pescara Harbour (Italy)
by Francesco Gallerano, Federica Palleschi and Benedetta Iele
J. Mar. Sci. Eng. 2020, 8(7), 487; https://doi.org/10.3390/jmse8070487 - 01 Jul 2020
Cited by 5 | Viewed by 2242
Abstract
In 1997, in front of the Pescara Harbour (Italy), a detached breakwater was constructed. In the successive years, the sediment transport due to the combined action of waves and coastal currents, in the area between the detached breakwater and the entrance of the [...] Read more.
In 1997, in front of the Pescara Harbour (Italy), a detached breakwater was constructed. In the successive years, the sediment transport due to the combined action of waves and coastal currents, in the area between the detached breakwater and the entrance of the Pescara Harbour, produced an accumulation of about 40,000   m 3 of sediment per year. In this paper, the causes of the accretion of the bottom elevation in front of the Pescara Harbour entrance and the effects produced by the existing detached breakwater are investigated. The effects on the sediment transport of the introduction of a new submerged breakwater designed to protect the entrance of the harbour from sediment siltation are investigated. In particular, the ability of the designed submerged breakwater, located orthogonally to the longshore current, to intercept the aforementioned solid material and to significantly reduce the accretion of the bottom in the area in front of the harbour entrance, was numerically verified. Numerical simulations were carried out by means of a model of the bottom-change composed of two sub-models: a two-dimensional phase resolving model that is used to calculate the fluid dynamic variables changing inside the wave period and a second sediment transport sub-model to simulate the bottom changes, in which the suspended sediment concentration is calculated by the wave-averaged advection–diffusion equation. The equations of motion, in which the vector and tensor quantities are expressed in Cartesian components, are written in a generalised curvilinear coordinate system. The fully nonlinear Boussinesq equations are written in an integral form and used to simulate the velocity fields. Full article
(This article belongs to the Special Issue Numerical Investigation of Wave-Structure Interaction)
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19 pages, 6926 KiB  
Article
Numerical Modelling and Dynamic Response Analysis of Curved Floating Bridges with a Small Rise-Span Ratio
by Ling Wan, Dongqi Jiang and Jian Dai
J. Mar. Sci. Eng. 2020, 8(6), 467; https://doi.org/10.3390/jmse8060467 - 24 Jun 2020
Cited by 9 | Viewed by 2864
Abstract
As a potential option for transportation applications in coastal areas, curved floating bridges with a same small specified rise to span ratio of 0.134, supported by multiple pontoons, are investigated in this paper. Two conceptual curved bridges are proposed following a circular arc [...] Read more.
As a potential option for transportation applications in coastal areas, curved floating bridges with a same small specified rise to span ratio of 0.134, supported by multiple pontoons, are investigated in this paper. Two conceptual curved bridges are proposed following a circular arc shape with different span lengths (500 and 1000 m). Both bridges are end-connected to the shoreline without any underwater mooring system, while the end-connections can be either all six degrees of freedom (D.O.F) fixed or two rotational D.O.F released. Eigen value analysis is carried out to identify the modal parameters of the floating bridge system. Static and dynamic analysis under extreme environmental conditions are performed to study the pontoon motions as well as structural responses of the bridge deck. Deflections and internal forces (axial forces, shear forces, and bending moment) are thoroughly studied with the variation of the span length and end support conditions in terms of the same specified small rise-span ratio. The ratio of axial force to horizontal bending moment are presented. From the study, it is found that the current parameters for the bridge are relatively reasonable regarding responses. However, the small rise-span does not provide enough arch effects. A higher rise-span ratio or stiffer bridge cross-sectional property is preferred, especially for the long bridge. In addition, the flexible end connections are preferred considering the structural responses at the end regions. Full article
(This article belongs to the Special Issue Numerical Investigation of Wave-Structure Interaction)
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21 pages, 6782 KiB  
Article
3D Numerical Simulation of the Interaction between Waves and a T-Head Groin Structure
by Giovanni Cannata, Marco Tamburrino and Francesco Gallerano
J. Mar. Sci. Eng. 2020, 8(3), 227; https://doi.org/10.3390/jmse8030227 - 24 Mar 2020
Cited by 3 | Viewed by 2155
Abstract
The aim of coastal structures for the defense from erosion is to modify the hydrodynamic fields that would naturally occur with the wave motion, to produce zones of sedimentation of solid material, and to combat the recession of the coastline. T-head groin-shaped structures [...] Read more.
The aim of coastal structures for the defense from erosion is to modify the hydrodynamic fields that would naturally occur with the wave motion, to produce zones of sedimentation of solid material, and to combat the recession of the coastline. T-head groin-shaped structures are among the most adopted in coastal engineering. The assessment of the effectiveness of such structures requires hydrodynamic study of the interaction between wave motion and the structure. Hydrodynamic phenomena induced by the interaction between wave motion and T-head groin structures have three-dimensionality features. The aim of the paper is to propose a new three-dimensional numerical model for the simulation of the hydrodynamic fields induced by the interaction between wave fields and coastal structures. The proposed model is designed to represent complex morphologies as well as coastal structures inside the domain. The numerical scheme solves the three-dimensional Navier–Stokes equations in a contravariant formulation, on a time-dependent coordinate system, in which the vertical coordinate varies over time to follow the free-surface elevation. The main innovative element of the paper consists in the proposal of a new numerical scheme that makes it possible to simulate flows around structures with sharp-cornered geometries. The proposed numerical model is validated against a well-known experimental test-case consisting in a wave train approaching a beach (non-parallel with the wave front), with the presence of a T-head groin structure. A detailed comparison between numerical and experimental results is shown. Full article
(This article belongs to the Special Issue Numerical Investigation of Wave-Structure Interaction)
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